# Copyright 2017 Google Inc.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

require 'logger'
require 'singleton'

# A convenience singleton of Logger for using within the application
class Logger
  include Singleton

  # rubocop:disable Style/ClassVars
  @@old_initialize = Logger.instance_method :initialize

  def initialize
    @@old_initialize.bind(self).call(STDERR) unless ENV['GOOGLE_LOGGER'] == '0'
  end
  # rubocop:enable Style/ClassVars
end

module Google
  LOGGER = Logger.instance
end
